Salinity changes the nitrification activity and community composition of comammox <i>Nitrospira</i> in intertidal sediments of Yangtze River estuary.

ABSTRACT: The newly discovered complete ammonia-oxidizing (comammox) Nitrospira has been identified in different environments, including coastal environments, where salinity is one of the most important factors for the abundance and activity of nitrifiers. Here, we demonstrate the effect of salinity on comammox Nitrospira, canonical ammonia-oxidizing bacteria (AOB), and ammonia-oxidizing archaea (AOA) in the intertidal sediments of the Yangtze River estuary based on microcosm experiments, DNA stable-isotope probing (DNA-SIP), and potential ammonium-oxidation rate (PAR) tests for different groups of ammonia oxidizers with selective inhibitors. During microcosm incubations, the abundance of comammox Nitrospira was more sensitive to increased salinity than that of other ammonia oxi

SUBMITTER: Jiang R 

PROVIDER: S-EPMC10308925 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature